function gradeSelect() {
	document.getElementById("specialityId").value = "";
	document.getElementById("admissionYear").value = "";
	var url="selectGrade.jsp";
	showDialog(url, window, "400px", "250px");
	
	var specialityId = document.getElementById("specialityId").value;
	var admissionYear = document.getElementById("admissionYear").value;
	
	if( specialityId == "" || admissionYear == "")
		return;
	
	var url="/practice/practiceCourseManage/courseManage.do?method=showGradeSelection&specialityId=" + specialityId
		+ "&admissionYear=" + admissionYear;
	
	parent.frames("contentFrm").navigate(url);
}

function subjectManage() {
	var url = "/practice/practiceSubjectManage/index.jsp";
	showDialog(url, null, "800px", "600px");
}
